/* ============================================================
   VRAXION — Shared stylesheet v5.0.0-β.2
   Design tokens + top nav + fullscreen utilities + cards
   Dark-only, mobile-first
   ============================================================ */

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --bg:   #0b0d14;
  --bg-2: #11141e;
  --bg-3: #0a0c12;
  --border: #1f2432;

  --ink:   #ecedf3;
  --ink-2: #b3b8c9;
  --ink-3: #767c92;

  --cyan:    #56e0e0;
  --purple:  #a07cf0;
  --fuchsia: #ff5aa8;
  --jade:    #7fd89a;
  --amber:   #e8c858;

  --accent: var(--fuchsia);

  --font:      "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --nav-h: 56px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--font); }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; font-size: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { list-style: none; padding: 0; margin: 0; }
img, svg { display: block; }

/* ── Top Navigation Bar ─────────────────────────────────────── */
.topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 200;
  background: color-mix(in oklab, var(--bg-3) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 0;
}

.topnav-brand {
  font-family: var(--font);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--ink);
  text-transform: uppercase;
  flex-shrink: 0;
  margin-right: auto;
}

.topnav-brand:hover { color: var(--accent); }

/* Center tabs */
.topnav-tabs {
  display: none;
  align-items: center;
  gap: 2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

@media (min-width: 640px) {
  .topnav-tabs { display: flex; }
}

.topnav-tabs a,
.topnav-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--ink-3);
  transition: color .15s, background .15s;
  white-space: nowrap;
}

.topnav-tabs a:hover,
.topnav-tab-btn:hover {
  color: var(--ink);
  background: var(--bg-2);
}

.topnav-tabs a.active,
.topnav-tab-btn.active {
  color: var(--ink);
  background: var(--bg-2);
}

/* Blocks dropdown */
.topnav-drop { position: relative; }

.topnav-drop-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 196px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 16px 40px -8px rgba(0,0,0,.6);
}

.topnav-drop:hover .topnav-drop-menu,
.topnav-drop-menu:hover {
  display: block;
}

.topnav-drop-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--ink-3);
  border-radius: 6px;
  transition: color .12s, background .12s;
}

.topnav-drop-menu a:hover {
  color: var(--ink);
  background: var(--bg-3);
}

.topnav-drop-menu a .blk-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-3);
  width: 16px;
  flex-shrink: 0;
}

/* Right side: version + GitHub */
.topnav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  flex-shrink: 0;
}

.topnav-version {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--fuchsia);
  background: color-mix(in oklab, var(--fuchsia) 8%, transparent);
  border: 1px solid color-mix(in oklab, var(--fuchsia) 28%, var(--border));
  padding: 3px 9px;
  border-radius: 4px;
  display: none;
}

@media (min-width: 480px) {
  .topnav-version { display: inline-block; }
}

.topnav-gh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-3);
  transition: color .15s;
  font-size: 13px;
}

.topnav-gh:hover { color: var(--ink); }

/* Hamburger */
.topnav-burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: 6px;
  border-radius: 6px;
  margin-left: 8px;
  cursor: pointer;
}

@media (min-width: 640px) {
  .topnav-burger { display: none; }
}

.topnav-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink-3);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* Mobile drawer */
.topnav-drawer {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 20px;
  z-index: 199;
  flex-direction: column;
  gap: 2px;
}

.topnav-drawer.open { display: flex; }

.topnav-drawer a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink-3);
  transition: color .12s, background .12s;
}

.topnav-drawer a:hover {
  color: var(--ink);
  background: var(--bg-3);
}

.topnav-drawer a.active {
  color: var(--ink);
  background: var(--bg-3);
}

.drawer-sep {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

/* ── Fullscreen section utility ─────────────────────────────── */
.screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--nav-h) 0 0;
  position: relative;
  overflow: hidden;
}

.screen-inner {
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  padding: 64px 24px;
}

@media (min-width: 768px) {
  .screen-inner { padding: 96px 48px; }
}

/* ── Block card ─────────────────────────────────────────────── */
.block-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 28px 26px;
  position: relative;
  transition: border-color .18s, transform .18s;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.block-card:hover {
  border-color: color-mix(in oklab, var(--accent) 38%, var(--border));
  transform: translateY(-3px);
}

.block-card-idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.block-card-name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.block-card-desc {
  font-size: 13.5px;
  color: var(--ink-3);
  line-height: 1.55;
  flex: 1;
}

.block-card-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid var(--border);
  color: var(--ink-3);
  align-self: flex-start;
}

.block-card-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.block-card-status.frozen {
  color: var(--cyan);
  border-color: color-mix(in oklab, var(--cyan) 35%, var(--border));
  background: color-mix(in oklab, var(--cyan) 6%, transparent);
}

.block-card-status.locked {
  color: var(--fuchsia);
  border-color: color-mix(in oklab, var(--fuchsia) 35%, var(--border));
  background: color-mix(in oklab, var(--fuchsia) 6%, transparent);
}

.block-card-status.active {
  color: var(--jade);
  border-color: color-mix(in oklab, var(--jade) 35%, var(--border));
  background: color-mix(in oklab, var(--jade) 6%, transparent);
}

.block-card-status.planned {
  color: var(--ink-3);
  border-color: var(--border);
}

.block-card-link {
  position: absolute;
  inset: 0;
  border-radius: 14px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  transition: transform .08s, background .14s, border-color .14s;
  cursor: pointer;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--fuchsia);
  color: #190914;
  border: 1px solid var(--fuchsia);
  box-shadow: 0 10px 28px -10px color-mix(in oklab, var(--fuchsia) 55%, transparent);
}

.btn-primary:hover {
  background: color-mix(in oklab, var(--fuchsia) 84%, white);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--ink);
  background: var(--bg-2);
}

.btn-ghost:hover { border-color: var(--ink-3); }

.btn-arrow { transition: transform .15s; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ── Status strip ───────────────────────────────────────────── */
.status-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

@media (min-width: 640px) {
  .status-grid { grid-template-columns: repeat(4, 1fr); }
}

.status-cell {
  background: var(--bg-2);
  padding: 22px 24px;
}

.status-cell-val {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 6px;
  font-family: var(--font);
}

.status-cell-val em {
  color: var(--fuchsia);
  font-style: italic;
}

.status-cell-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ── Keyboard nav focus ─────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--fuchsia);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Glow / decorative bg ───────────────────────────────────── */
.glow-bg {
  pointer-events: none;
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 55% at 75% 35%,
      color-mix(in oklab, var(--fuchsia) 12%, transparent), transparent 70%),
    radial-gradient(ellipse 35% 40% at 20% 70%,
      color-mix(in oklab, var(--cyan) 6%, transparent), transparent 70%);
  z-index: 0;
}

/* ── Section divider ────────────────────────────────────────── */
.section-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-3);
  padding: 32px 24px;
}

.site-footer-inner {
  max-width: 1060px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-3);
  font-family: var(--font-mono);
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
}

.site-footer-links a {
  color: var(--ink-3);
  transition: color .15s;
}

.site-footer-links a:hover { color: var(--ink); }

/* ── Pulse animation ────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.pulse-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fuchsia);
  box-shadow: 0 0 8px var(--fuchsia);
  animation: pulse 2.4s ease-in-out infinite;
}